6942409851 has 16 divisors (see below), whose sum is σ = 9996376320. Its totient is φ = 4260343200.

The previous prime is 6942409849. The next prime is 6942409879. The reversal of 6942409851 is 1589042496.

It is not a de Polignac number, because 6942409851 - 2¹ = 6942409849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6942409851.

It is not an unprimeable number, because it can be changed into a prime (6942419851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233925 + ... + 261926.

It is an arithmetic number, because the mean of its divisors is an integer number (624773520).

Almost surely, 2^6942409851 is an apocalyptic number.

6942409851 is a deficient number, since it is larger than the sum of its proper divisors (3053966469).

6942409851 is a wasteful number, since it uses less digits than its factorization.

6942409851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496226.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 6942409851 is about 83321.1248783884. The cubic root of 6942409851 is about 1907.6707304754.

The spelling of 6942409851 in words is "six billion, nine hundred forty-two million, four hundred nine thousand, eight hundred fifty-one".